Stac
abbr. 科技咨询委员会（Science and Technology Advisory Committee）
🗣️ 情景例句
It would be a great business if you could do that.
假如你能办到那样的话， 可是一笔大生意。
No wonder!
这也难怪！
During the night, it got terribly cold.
夜里，天冷得厉害。